blob: 38d84b45fbe510c697e72ee55e52c95c127bd8b9
| 1 | /* |
| 2 | * drivers/amvdec_ports/decoder/aml_h264_parser.h |
| 3 | * |
| 4 | * Copyright (C) 2015 Amlogic, Inc. All rights reserved. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 14 | * more details. |
| 15 | * |
| 16 | */ |
| 17 | |
| 18 | |
| 19 | #ifndef AML_H264_PARSER_H |
| 20 | #define AML_H264_PARSER_H |
| 21 | |
| 22 | #define QP_MAX_NUM (51 + 6*6) // The maximum supported qp |
| 23 | |
| 24 | /* NAL unit types */ |
| 25 | enum { |
| 26 | H264_NAL_SLICE = 1, |
| 27 | H264_NAL_DPA = 2, |
| 28 | H264_NAL_DPB = 3, |
| 29 | H264_NAL_DPC = 4, |
| 30 | H264_NAL_IDR_SLICE = 5, |
| 31 | H264_NAL_SEI = 6, |
| 32 | H264_NAL_SPS = 7, |
| 33 | H264_NAL_PPS = 8, |
| 34 | H264_NAL_AUD = 9, |
| 35 | H264_NAL_END_SEQUENCE = 10, |
| 36 | H264_NAL_END_STREAM = 11, |
| 37 | H264_NAL_FILLER_DATA = 12, |
| 38 | H264_NAL_SPS_EXT = 13, |
| 39 | H264_NAL_AUXILIARY_SLICE = 19, |
| 40 | }; |
| 41 | |
| 42 | |
| 43 | enum { |
| 44 | // 7.4.2.1.1: seq_parameter_set_id is in [0, 31]. |
| 45 | H264_MAX_SPS_COUNT = 32, |
| 46 | // 7.4.2.2: pic_parameter_set_id is in [0, 255]. |
| 47 | H264_MAX_PPS_COUNT = 256, |
| 48 | |
| 49 | // A.3: MaxDpbFrames is bounded above by 16. |
| 50 | H264_MAX_DPB_FRAMES = 16, |
| 51 | // 7.4.2.1.1: max_num_ref_frames is in [0, MaxDpbFrames], and |
| 52 | // each reference frame can have two fields. |
| 53 | H264_MAX_REFS = 2 * H264_MAX_DPB_FRAMES, |
| 54 | |
| 55 | // 7.4.3.1: modification_of_pic_nums_idc is not equal to 3 at most |
| 56 | // num_ref_idx_lN_active_minus1 + 1 times (that is, once for each |
| 57 | // possible reference), then equal to 3 once. |
| 58 | H264_MAX_RPLM_COUNT = H264_MAX_REFS + 1, |
| 59 | |
| 60 | // 7.4.3.3: in the worst case, we begin with a full short-term |
| 61 | // reference picture list. Each picture in turn is moved to the |
| 62 | // long-term list (type 3) and then discarded from there (type 2). |
| 63 | // Then, we set the length of the long-term list (type 4), mark |
| 64 | // the current picture as long-term (type 6) and terminate the |
| 65 | // process (type 0). |
| 66 | H264_MAX_MMCO_COUNT = H264_MAX_REFS * 2 + 3, |
| 67 | |
| 68 | // A.2.1, A.2.3: profiles supporting FMO constrain |
| 69 | // num_slice_groups_minus1 to be in [0, 7]. |
| 70 | H264_MAX_SLICE_GROUPS = 8, |
| 71 | |
| 72 | // E.2.2: cpb_cnt_minus1 is in [0, 31]. |
| 73 | H264_MAX_CPB_CNT = 32, |
| 74 | |
| 75 | // A.3: in table A-1 the highest level allows a MaxFS of 139264. |
| 76 | H264_MAX_MB_PIC_SIZE = 139264, |
| 77 | // A.3.1, A.3.2: PicWidthInMbs and PicHeightInMbs are constrained |
| 78 | // to be not greater than sqrt(MaxFS * 8). Hence height/width are |
| 79 | // bounded above by sqrt(139264 * 8) = 1055.5 macroblocks. |
| 80 | H264_MAX_MB_WIDTH = 1055, |
| 81 | H264_MAX_MB_HEIGHT = 1055, |
| 82 | H264_MAX_WIDTH = H264_MAX_MB_WIDTH * 16, |
| 83 | H264_MAX_HEIGHT = H264_MAX_MB_HEIGHT * 16, |
| 84 | }; |
| 85 | |
| 86 | |
| 87 | #endif /* AML_H264_PARSER_H */ |
| 88 | |
| 89 |